[Revathi R]

Function Call

inline void intllist::copy(const intllist& d)
{
Scanner wiz((Collection&)d);
while (wiz.increment())
append(intcast(wiz));--------------------------->Call
present = (intnode*)(void*)getfirst();

}

Function body

inline intllist& intllist::append(int& d)
{
llist::append(new intnode(d));
return *this;
}


Error:

Error: Formal argument d of type int& in call to intllist::append(int&) requires an lvalue.


what is the Problem??

Thanks
Revathi R

[salem]

> append(intcast(wiz));--------------------------->Call
...
> Error: Formal argument d of type int& in call to intllist::append(int&) requires an lvalue.

The problem is that casts are r-values, not l-values (that's what the error message is telling you).

Try say

int temp = intcast(wiz);
append(temp);

Note the use of [code][/code] tags here to show code in a nice presentable format (it also preserves indentation). Please use them when posting code in future.

[Revathi R]

Thanks it worked :)

if you don't mind will you enlight me the same

even i am doing a direct cast in call why it does not worked :(


Thanks in advance

[Revathi R]

Hello

I am working on C++ code i have compiled the code it has generated .so files

class A
{
sum()
}

A-->compiled-->A.so

now my requirement is to call a sun() function from
some other function that i have written.

like this

main()
{
sum();--->here class A's sum() must be called.
}

How can i call sum() from main()?


any help is highly appriciated.


Regards
Revathi R

[salem]

> if you don't mind will you enlight me the same
> even i am doing a direct cast in call why it does not worked
I told you already - a cast is not an l-value.
It's as invalid as trying to do this
int *ptr = &42;
does NOT generate a pointer to some anonymous integer containing the value 42

> sum();--->here class A's sum() must be called.
I thought this was beginning of the book C++.
To call a member function, you need an instance of the object.

A someVar;
someVar.sum();

[Revathi R]

Humm

Thank you.

I am migrating C++ code written on 4.3 sun CC to 5.8 sun CC
when i have compiled the code on Production environmet it generates .so files

all the generated .so's are working fine

but i have problem with one .so file,[e the functionality is it has to open a log file and write to logfile. but it is not creating log file]

so i would like to Debug that.

as you mentioned

classname obj;
obj.fun();

i am writting a new function called main() from which i am calling functions of .so

main wont be known about class's and functions of that .so

so my question is how can i make classes and funtions of .so visible to main() so that i from main i can trae out



Thanks,
Revathi R

[salem]

So you have an A.cpp compiled down the .so file.

Do you also have a A.h file describing the interface?
You should have, if you want this to work.

Then in your main.cpp, you begin with
#include "A.h"
along with any other header files you need.

Post actual error messages if you get stuck.

[Revathi R]

Thanks ...


I am Getting some liker error

Makefile:160: warning: overriding commands for target `.C.o'
../../../../../etc/sparc/wsmkinclude.common:260: warning: ignoring old commands for target `.C.o'
Makefile:163: warning: overriding commands for target `.c.o'
../../../../../etc/sparc/wsmkinclude.common:264: warning: ignoring old commands for target `.c.o'
ksh ../../../../../libs/general/src/versionString.C > versionString.C; CC  -c -xildoff -fast -O3 -compat=4 -features=extensions -i -DSYSTEMV -DCGM  -I/u01/apps/oracle_client/product/10.2.0/precomp/public -I../../../../../libs/af/include -I../../../../../libs/graphics/include -I../../../../../libs/motif/include -I../../../../../libs/rwextensions/include -I/u04/net/rtp-netapp1/vol/build/nwwls/devspace/thirdparty/SunOS/5.6/rwav/ver09.1/workspaces/SOLARIS26/SUNPRO42/0s -I/u04/net/rtp-netapp1/vol/build/nwwls/devspace/thirdparty/SunOS/common/zlib-1.1.3/include -I../../../../../libs/general/include -I../../../../../libs/pixmaps/include -I. -I../../../../../libs/tableGateway/include -I../../../../../libs/tableGatewayWriteback/include -I../../../../../libs/general/include -I../../../../../libs/gateway/include -I../../../../../libs/expressions/include -I../../../../../libs/modelGateWay/include -I../../../../../libs/configuration/include -I../../../../../libs/rwextensions/include -I../../../../../libs/expressions/include -I../../../../../libs/rwdbextensions/include -I../../../../../libs/ipc3/include -I../../../../../libs/xml/include -I../../../libs/perform/include -I/u04/net/rtp-netapp1/vol/build/nwwls/devspace/thirdparty/SunOS/5.6/rwav/ver09.1/workspaces/SOLARIS26/SUNPRO42/0s -DWM_VERSION=\"mauiLoader.0.9\" -DWM_PRODUCT=\"Prospect\" versionString.C
CC  -ptv -xildoff -fast -O3 -compat=4 -features=extensions -i -DSYSTEMV -DCGM  -L../../../libs/lib -L../../../../../libs/lib -L/u04/net/rtp-netapp1/vol/build/nwwls/devspace/thirdparty/SunOS/5.6/rwav/ver09.1/workspaces/SOLARIS26/SUNPRO42/0s/lib -I/u04/net/rtp-netapp1/vol/build/nwwls/devspace/thirdparty/SunOS/common/expat/xmlparse -L/usr/ccs/lib FileLoadEventGenerator.o main.o CommandEnv.o LoaderJob.o versionString.o /u04/net/rtp-netapp1/vol/build/nwwls/devspace/thirdparty/SunOS/5.6/rwav/ver09.1/workspaces/SOLARIS26/SUNPRO42/0s/lib/dborlib.o \
                 -nolib -lperform -ltableGateway -lmodelGateWay -lgateway -lconfiguration -lxml -lparser -lexpressions -lareas -lipc3 -lgeneral -lrwdbextensions -lrwextensions -Bdynamic  /u04/net/rtp-netapp1/vol/build/nwwls/devspace/thirdparty/SunOS/5.6/rwav/ver09.1/workspaces/SOLARIS26/SUNPRO42/0s/lib/libora0s.a /u04/net/rtp-netapp1/vol/build/nwwls/devspace/thirdparty/SunOS/5.6/rwav/ver09.1/workspaces/SOLARIS26/SUNPRO42/0s/lib/libdbt0s.a /u04/net/rtp-netapp1/vol/build/nwwls/devspace/thirdparty/SunOS/5.6/rwav/ver09.1/workspaces/SOLARIS26/SUNPRO42/0s/lib/libtls0s.a /u04/net/rtp-netapp1/vol/build/nwwls/devspace/thirdparty/SunOS/5.6/rwav/heap/lib/librwheap.a /u04/net/rtp-netapp1/vol/build/nwwls/devspace/thirdparty/SunOS/common/zlib-1.1.3/lib.sparc/libz.a -L/u01/apps/oracle_client/product/10.2.0/lib32 -lclntsh -lnnz10 -lkstat -lnsl -lsocket -lgen -ldl -lsched /u04/net/rtp-netapp1/vol/build/nwwls/devspace/thirdparty/SunOS/common/expat/lib.sparc/libexpat.a ../../../../../libs/lib/libgeneral.a ../../../../../libs/lib/libtableGatewayWriteback.a -lsocket -lnsl -lintl -lgen -Bstatic -lC -Bdynamic -ldl -Bstatic -lcomplex -lsunmath -Bdynamic -lthread -lm -lc -nolib -o commander.static
Undefined                       first referenced
 symbol                             in file
WmExpSimpleNumericFunctionNode::preeval(RWEString&, WmExpState*, FilterableCollection*, RWOrdered*, int) ../../../../../libs/lib/libexpressions.a(wmexpmathsfunctionnode.o)
WmExpSimpleNumericFunctionNode::WmExpSimpleNumericFunctionNode(const WmExpSimpleNumericFunctionNode&) ../../../../../libs/lib/libexpressions.a(wmexpmathsfunctionnode.o)
WmExpSimpleNumericFunctionNode::WmExpSimpleNumericFunctionNode(const char*, AttrType) ../../../../../libs/lib/libexpressions.a(wmexpmathsfunctionnode.o)
WmExpSimpleNumericFunctionNode::optimise(WmExpState*) ../../../../../libs/lib/libexpressions.a(wmexpmathsfunctionnode.o)
ld: fatal: Symbol referencing errors. No output written to commander.static
gmake: *** [commander.static] Error 1

I could see in WmExpSimpleNumericFunctionNode::preeval(RWEString&, WmExpState*, FilterableCollection*, RWOrdered*, int)
in code which comes down to libgeneral.a

libgeneral.a also linked ../../../../../libs/lib/libgeneral.a above


will you enlight what was the issue

Regards
Revathi R

[salem]

Are you sure that those symbols are in the libgeneral.a file?

Try say
nm libgeneral.a | grep -i WmExpSimpleNumericFunctionNode

My first thought was library ordering, but libgeneral.a follows libexpressions.a.

The only other reasons I can think of are
- libgeneral.a wasn't built successfully, so it's missing the object file of interest.
- There is a spelling mistake in the caller (in libexpressions).

[Revathi R]

oops i am sorry

The code getdown to
libexpressions.acontains the declarations of Prototypes.


nm libexpressions.a| grep -i WmExpSimpleNumericFunctionNode
[131] | 0| 0|NOTY |GLOB |0 |UNDEF |__0feWmExpSimpleNumericFunctionNodeHpreevalR6JRWEStringP6KWmExpStateP6UFilterableCollectionP6JRWOrd eredi
[132] | 0| 0|NOTY |GLOB |0 |UNDEF |__0feWmExpSimpleNumericFunctionNodeIoptimiseP6KWmExpState
[147] | 0| 0|FUNC |GLOB |0 |UNDEF |__0oeWmExpSimpleNumericFunctionNodectPCc6IAttrType
[148] | 0| 0|FUNC |GLOB |0 |UNDEF |__0oeWmExpSimpleNumericFunctionNodectRC6eWmExpSimpleNumericFunctionNode
[42] | 7580| 16|FUNC |LOCL |0 |2 |__0oeWmExpSimpleNumericFunctionNodedt1v
[105] | 0| 0|NOTY |GLOB |0 |UNDEF |__0feWmExpSimpleNumericFunctionNodeHpreevalR6JRWEStringP6KWmExpStateP6UFilterableCollectionP6JRWOrd eredi
[106] | 0| 0|NOTY |GLOB |0 |UNDEF |__0feWmExpSimpleNumericFunctionNodeIoptimiseP6KWmExpState
[115] | 0| 0|FUNC |GLOB |0 |UNDEF |__0oeWmExpSimpleNumericFunctionNodectPCc6IAttrType
[116] | 0| 0|FUNC |GLOB |0 |UNDEF |__0oeWmExpSimpleNumericFunctionNodectRC6eWmExpSimpleNumericFunctionNode
[36] | 3552| 16|FUNC |LOCL |0 |2 |__0oeWmExpSimpleNumericFunctionNodedt1v

[salem]

Yes, we know they're unresolved in libexpressions.

What about libgeneral ?

[Revathi R]

bash-2.03# nm libgeneral.a | grep -i WmExpSimpleNumericFunctionNode
bash-2.03#

[salem]

in code which comes down to libgeneral.a

libgeneral.a also linked ../../../../../libs/lib/libgeneral.a above

So in other words, your previous statement that libgeneral had these symbols is in fact wrong.

[Revathi R]

yes

[Revathi R]

/opt/SUNWspro/bin/CC -o msggen  msggen.o licensemessage.o ../../../../libs/lib/libgeneral.a
Undefined                       first referenced
 symbol                             in file
cerr                                ../../../../libs/lib/libgeneral.a(string.o)
unsafe_ostream::operator<<(long)              ../../../../libs/lib/libgeneral.a(string.o)
operator delete(void*)                            msggen.o
operator new(unsigned int)                            licensemessage.o
Iostream_init::Iostream_init(void)               msggen.o
Iostream_init::~Iostream_init(void)               msggen.o
istream::operator>>(char*)                    ../../../../libs/lib/libgeneral.a(string.o)
setw(int)                          ../../../../libs/lib/libgeneral.a(string.o)
unsafe_ostream::outstr(const char*, const char*)     ../../../../libs/lib/libgeneral.a(string.o)
_ex_rethrow_q                       msggen.o
ld: fatal: Symbol referencing errors. No output written to msggen
gmake[3]: *** [msggen] Error 1

CC -ptv -L../../../libs/lib  -L../../../../../libs/lib  -L/u04/net/rtp-netapp1/vol/build/nwwls/devspace/thirdparty/SunOS/5.6/rwav/ver09.1/workspaces/SOLARIS26/SUNPRO42/0s/lib  -L/usr/ccs/lib  -L/opt/SUNWspro/prod/lib/CC4/libp main.o  TimeHarness.o versionString.o -xildoff  -nolib  -lperform  -lmodelGateWay  -lgateway  -lconfiguration  -lparser  -lexpressions  -lipc3  -lgeneral  -lrwextensions  -Bdynamic \
           /u04/net/rtp-netapp1/vol/build/nwwls/devspace/thirdparty/SunOS/5.6/rwav/ver09.1/workspaces/SOLARIS26/SUNPRO42/0s/lib/libora0s.a  /u04/net/rtp-netapp1/vol/build/nwwls/devspace/thirdparty/SunOS/5.6/rwav/ver09.1/workspaces/SOLARIS26/SUNPRO42/0s/lib/libdbt0s.a  /u04/net/rtp-netapp1/vol/build/nwwls/devspace/thirdparty/SunOS/5.6/rwav/ver09.1/workspaces/SOLARIS26/SUNPRO42/0s/lib/libtls0s.a  /u04/net/rtp-netapp1/vol/build/nwwls/devspace/thirdparty/SunOS/common/zlib-1.1.3/lib.sparc/libz.a  /u04/net/rtp-netapp1/vol/build/nwwls/devspace/thirdparty/SunOS/5.6/rwav/heap/lib/librwheap.a -lsocket  -lnsl  -lintl   -lgen   -Bstatic  -lC  -Bdynamic  -ldl  -Bstatic  -lcomplex  -lsunmath  -Bdynamic  -lthread  -lm  -lc  -nolib -o timeHarness|& c++filt
Undefined                       first referenced
 symbol                             in file
void __Cimpl::cplus_init()        (command line)
_mcount                             /opt/SUNWspro/prod/lib/CC4/libp/libC.a(buffer.o)

i am Migrating code from CC4.2 to CC5.8, I am using libraries and header files of CC5.8

are above because of Those functions support not in CC5.8??